For the first two seasons of NCIS: Sydney, Bluebird “Blue” Gleeson remained one of the show’s most intriguing enigmas. While viewers knew her as a brilliant forensic scientist, her personal life was carefully kept out of focus — until the Season 2 finale teased a breakthrough with the appearance of a mysterious woman in her apartment. Season 3 quickly followed up, revealing long-hidden details about Blue’s family and origins.
What fans may not realize is that this backstory wasn’t a late addition. Actress Mavournee Hazel recently revealed that she has known the truth about Blue’s past since the very beginning of the series. Speaking with CinemaBlend, Hazel explained that the writers shared Blue’s full history early on, allowing her to shape the character’s emotional choices long before the audience had the full picture.
That long-term planning paid off. With Blue’s past now in the open, earlier moments take on new meaning, deepening the character’s emotional weight. The reveal confirms that NCIS: Sydney has been playing the long game — and trusting its audience to catch up when the time was right.
